fix tile flicker on video mute/unmute

(only pass rtcBackendIdenitity instead of full rtcMember)

src/state/UserMedia.ts

@@ -13,7 +13,6 @@ import {
   type Room as LivekitRoom,
 } from "livekit-client";
 import { observeParticipantEvents } from "@livekit/components-core";
-import { type CallMembership } from "matrix-js-sdk/lib/matrixrtc/CallMembership";
 
 import { type ObservableScope } from "./ObservableScope.ts";
 import {
@@ -76,7 +75,7 @@ export class UserMedia {
           this.scope,
           this.id,
           this.userId,
-          this.rtcMembership,
+          this.rtcBackendIdentity,
           this.participant.value$,
           this.encryptionSystem,
           this.livekitRoom$,
@@ -91,7 +90,7 @@ export class UserMedia {
           this.scope,
           this.id,
           this.userId,
-          this.rtcMembership,
+          this.rtcBackendIdentity,
           this.participant.value$,
           this.encryptionSystem,
           this.livekitRoom$,
@@ -143,7 +142,7 @@ export class UserMedia {
                     scope,
                     `${this.id}:${key}`,
                     this.userId,
-                    this.rtcMembership,
+                    this.rtcBackendIdentity,
                     p,
                     this.encryptionSystem,
                     this.livekitRoom$,
@@ -195,8 +194,7 @@ export class UserMedia {
     private readonly scope: ObservableScope,
     public readonly id: string,
     private readonly userId: string,
-    // TODO evaluate if this should just be the rtcBackendIdentity
-    private readonly rtcMembership: CallMembership,
+    private readonly rtcBackendIdentity: string,
     private readonly participant: TaggedParticipant,
     private readonly encryptionSystem: EncryptionSystem,
     private readonly livekitRoom$: Behavior<LivekitRoom | undefined>,